Get some X Metals, you will have a challange flattening out titanium!Sorry kinda late to the party but I've had a bunch of different RX frames. Most recently the Gasket, Servo and Crosslink. The Crosslink is by far my favorite RX frame I've ever had. Besides comfort, the have the rubber on the arms and nose which help keep them in place. Over the years....with my fat face LOL... I've notice that all my RX frames tend to lose its curve and the frames seem to flatten out and keep sliding down my nose which causes some nasty headaches. I don't know if it because I used them actually more than my sunglasses or what. It was most notable with the Servo frame. But the Crosslink, I put it through hell and I see that it has flatten out a bit..BUT it still stays in place and is comfortable and it was when I first bought it. Again kinda late, but hope it helps
I take this back if you have the same issue as @QLR1 . He would love a pair but alas they did not design them his dimensions in mind! Hope you don't mind me adding this QLR1